 Fortis Frontier PLC | MHC | GB00BN7K5L93 | |
 Gana Media Group PLC | MOS | GB00B0WJ3L68 | |
 M G Credit Income Investment Trust PLC | MGCI | GB00BFYYL325 | |
 M G PLC | MNG | GB00BKFB1C65 | |
 M.P. Evans Group PLC | MPE | GB0007538100 | |
 MAC Alpha Limited | MACA | VGG5869Z1045 | |
 Macau Property Opportunities Fund Limited | MPO | GG00BGDYFV61 | |
 Macfarlane Group PLC | MACF | GB0005518872 | |
 Made Tech Group PLC | MTEC | GB00BLGYDT21 | |
 Maintel Holdings PLC | MAI | GB00B046YG73 | |
| Majedie Investments PLC | MAJE | GB0005555221 | |
| Malibu Life Holdings Limited | MLHL | KYG8827C1006 | |
 Malvern International PLC | MLVN | GB00BNBVJZ07 | |
 Manchester London Investment Trust PLC | MNL | GB0002258472 | |
| Mandarin Oriental International Ltd | MDO | BMG578481068 | |
| Mandarin Oriental International Ltd | MDOB | BMG578481068 | |
 Manolete Partners PLC | MANO | GB00BYWQCY12 | |
 Manx Financial Group PLC | MFX | IM00B28ZPX83 | |
 Marechale Capital PLC | MAC | GB0005401087 | |
 Marks and Spencer Group PLC | MKS | GB0031274896 | |
 Marks Electrical Group PLC | MRK | GB00BM8Q5G47 | |
 Marlowe PLC | MRL | GB00BD8SLV43 | |
 Marshalls PLC | MSLH | GB00B012BV22 | |
 Marston's PLC | MARS | GB00B1JQDM80 | |
 Maruwa Co Limited | MAW | JP3879250003 | |
 Marwyn Acquisition Company III Limited | MAC3 | VGG5878H1038 | |
 Marwyn Value Investors Limited | MVI | KYG5897M1740 | |
| Marwyn Value Investors Limited | MVIR | KYG5897M2326 | |
| Marwyn Value Investors Limited | MVR2 | KYG5897M2243 | |
 Maven Income and Growth VCT 3 PLC | MIG3 | GB0031153769 | |
 Maven Income and Growth VCT 4 PLC | MAV4 | GB00B043QW84 | |
 Maven Income and Growth VCT 5 PLC | MIG5 | GB0002057536 | |
 Maven Income and Growth VCT PLC | MIG1 | GB0004122858 | |
| Maven Renovar VCT PLC | MRV | GB00B641BB82 | |
| Mayflower Acquisition Limited | MAY | VGG59Y661097 | |
 Mcbride PLC | MCB | GB0005746358 | |
 Mccoll's Retail Group PLC | MCLS | GB00BJ3VW957 | |
 Me Group International PLC | MEGP | GB0008481250 | |
 Mears Group PLC | MER | GB0005630420 | |
| Mediazest PLC | MDZ | GB00B064NT52 | |
 Medpal AI PLC | MPAL | GB00BTRC7N37 | |
 Meikles Ltd | MIK | ZW0009012114 | |
 Melrose Industries PLC | MRO | GB00BNGDN821 | |
 Menhaden Resource Efficiency PLC | MHN | GB00BZ0XWD04 | |
 Mercantile Ports Logistics Limited | MPL | GG00BKSH7R87 | |
 Merchants Trust PLC | MRCH | GB0005800072 | |
 Mercia Asset Management PLC | MERC | GB00BSL71W47 | |
 Metals Exploration PLC | MTL | GB00B0394F60 | |
 Metals One PLC | MET1 | GB00BSY1D385 | |
| Metir PLC | MET | GB00BMWC8365 | |
 Metlen Energy Metals PLC | MTLN | GB00BTQGS779 | |
 Metro Bank Holdings PLC | MTRO | GB00BMX3W479 | |
 MHA PLC | MHA | GB00BV0VHK88 | |
 Michelmersh Brick Holdings PLC | MBH | GB00B013H060 | |
 Mid Wynd International Investment Trust PLC | MWY | GB00B6VTTK07 | |
 Middlefield Canadian Income PCC | MCT | GB00B15PV034 | |
| Middlefield Canadian Income PCC | MCTA | JE00BTNNPW55 | |
| Middlefield Canadian Income PCC | MCTB | JE00BTNNPV49 | |
 Midwich Group PLC | MIDW | GB00BYSXWW41 | |
 Migo Opportunities Trust PLC | MIGO | GB0034365949 | |
 Mila Resources PLC | MILA | GB00BD4FCK53 | |
 Milton Capital PLC | MII | GB00BMWLC750 | |
 Mincon Group PLC | MCON | IE00BD64C665 | |
 Mind Gym PLC | MIND | GB00BF3SQB83 | |
| Mindflair PLC | MFAI | GB00BD07SH45 | |
 Mineral Financial Investments Limited | MAFL | KYG6181G1055 | |
 Minoan Group PLC | MIN | GB0008497975 | |
 Mitchells Butlers PLC | MAB | GB00B1FP6H53 | |
 Mitie Group PLC | MTO | GB0004657408 | |
 Miton UK Microcap Trust PLC | MINA | GB00BQSB9762 | |
| Miton UK Microcap Trust PLC | MINB | GB00BQSB9879 | |
 Mkango Resources Ltd | MKA | CA60686A4090 | |
 Mobico Group PLC | MCG | GB0006215205 | |
 Mobile Tornado Group PLC | MBT | GB00B01RQV23 | |
| Mobilityone Limited | MBO | JE00B1Z48326 | |
 Mobius Investment Trust PLC | MMIT | GB00BFZ7R980 | |
| MOH Nippon PLC | MOH | GB00BMYX7295 | |
 Molten Ventures VCT PLC | MVCT | GB0002867140 | |
 Mondi PLC | MNDI | GB00BMWC6P49 | |
 Monks Investment Trust PLC | MNKS | GB0030517261 | |
 Montanaro European Smaller Companies Trust PLC | MTE | GB00BM8H3X05 | |
 Montanaro UK Smaller Companies Investment Trust PLC | MTU | GB00BZ1H9L86 | |
 Mony Group PLC | MONY | GB00B1ZBKY84 | |
 Moonpig Group PLC | MOON | GB00BMT9K014 | |
 Morgan Advanced Materials PLC | MGAM | GB0006027295 | |
 Morgan Sindall Group PLC | MGNS | GB0008085614 | |
 Mothercare PLC | MTC | GB0009067447 | |
 Motorpoint Group PLC | MOTR | GB00BD0SFR60 | |
| Mountview Estates PLC | MTVW | GB0006081037 | |
 Mpac Group PLC | MPAC | GB0005991111 | |
 MS International PLC | MSI | GB0005957005 | |
 MTI Wireless Edge Ltd | MWE | IL0010958762 | |
 Mulberry Group PLC | MUL | GB0006094303 | |
 Murray Income Trust PLC | MUT | GB0006111123 | |
| Murray International Trust PLC | MYI | GB00BQZCCB79 | |
 Mycelx Technologies Corporation | MYX | US62847T2024 | |
| Mycelx Technologies Corporation | MYXR | USU624551318 | |
 Petro Matad Limited | MATD | IM00B292WR19 | |
 Quantum Data Energy PLC | MAST | GB00BNG90H86 | |
 Quantum Helium Limited | MSMN | AU0000XINET1 | |
